Development of multiple tumors in a sebaceous nevus of Jadassohn.

We report the case of a 56-year-old male with a sebaceous nevus of the scalp, complicated by multiple tumor development. Histologic examination revealed a basal cell carcinoma, a syringocystadenoma papilliferum and a proliferating trichilemmal cyst. Sebaceous nevus has a well-documented neoplastic potential. Multiple tumors may occasionally arise, but the coexistence of 3 or more tumors is extremely rare. Close monitoring and early complete surgical excision of sebaceous nevi are warranted, in order to ensure a favorable prognosis.